Add 21/5 and 25/72
1st number: 4 1/5, 2nd number: 25/72
21/5 + 25/72 is 1637/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 5 × 72 = 360,
21/5 = 21 × 72/5 × 72 = 1512/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
25/72 = 25 × 5/72 × 5 = 125/360 - Add the two like fractions:
1512/360 + 125/360 = 1512 + 125/360 = 1637/360 - So, 21/5 + 25/72 = 1637/360
In mixed form: 4197/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5+25/72 21/5+50/72 21/10+25/72 63/5+25/72 21/5+75/72 21/15+25/72 21/25+25/72 21/35+25/72